DTC P0300-00: Random/Multiple Cylinder Misfire Detected; DTC P0300-27: Random/Multiple Cylinder Misfire Detected (Emission) Signal Rate of Change Above Threshold; DTC P0300-85: Random / Multiple Cylinder Misfire Detected (Over Temperature) Signal Above Allowable Range; DTC P0301-00: Cylinder 1 Misfire Detected; DTC P0302-00: Cylinder 2 Misfire Detected; DTC P0303-00: Cylinder 3 Misfire Detected; DTC P0304-00: Cylinder 4 Misfire Detected; DTC P0305-00: Cylinder 5 Misfire Detected; DTC P0306-00: Cylinder 6 Misfire Detected [12/2023 - ]: Procedure
- CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE DTCS)
- Read the DTCs.
Powertrain > Engine > Trouble Codes
Result
Result Proceed to P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00, P0304-00, P0305-00 or P0306-00 and other DTCs are output A P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00, P0304-00, P0305-00 or P0306-00 is output B HINT:
If any DTCs other than P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00, P0304-00, P0305-00 and/or P0306-00 are output, troubleshoot those DTCs first.
Result:
A
GO TO DTC CHART. Refer To DIAGNOSTIC TROUBLE CODE CHART [12/2023 - ]
Result:
B
See step 2
- Read the DTCs.
- CHECK PCV HOSE CONNECTIONS
- Check the PCV hose connections.
OK
PCV valve and hose are correctly connected and are not damaged.
Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE PCV HOSE
Result:
OK
See step 3
- Check the PCV hose connections.
- READ VALUE USING GTS (MISFIRE RPM AND MISFIRE LOAD)
- Read and note the Misfire RPM and Misfire Load values.
Powertrain > Engine > Data List
Tester Display Misfire RPM Misfire Load HINT:
The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred.
Result
Proceed to NEXT
Result:
NEXT
See step 4
- Read and note the Misfire RPM and Misfire Load values.
- READ VALUE USING GTS (CATALYST OT MISFIRE FUEL CUT)
- Read the value displayed on the GTS.
Powertrain > Engine > Data List
Tester Display Catalyst OT Misfire Fuel Cut Result
Result Proceed to The value of Catalyst OT Misfire Fuel Cut is Avail A The value of Catalyst OT Misfire Fuel Cut is Not Avl B
Result:
B
See step 16
Result:
A
See step 5
- Read the value displayed on the GTS.
- CHECK DTC
- Check the DTCs that were output when the vehicle was brought to the workshop.
Powertrain > Engine > Trouble Codes
Result
Result Proceed to P0300-00 is output A P0300-27 is output B P0300-85 is output C P0301-00 is output D P0302-00 is output E P0303-00 is output F P0304-00 is output G P0305-00 is output H P0306-00 is output I
Result:
B
See step 8
Result:
C
See step 9
Result:
D
See step 10
Result:
E
See step 11
Result:
F
See step 12
Result:
G
See step 13
Result:
H
See step 14
Result:
I
See step 15
Result:
A
See step 6
- Check the DTCs that were output when the vehicle was brought to the workshop.
- READ FREEZE FRAME DATA (CATALYST OT MISFIRE FUEL CUT HISTORY)
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
Powertrain > Engine > DTC(P0300-00) > Freeze Frame Data
Tester Display Catalyst OT Misfire Fuel Cut History Result
Result Proceed to The value of Catalyst OT Misfire Fuel Cut History is ON A The value of Catalyst OT Misfire Fuel Cut History is OFF B
Result:
B
See step 16
Result:
A
See step 7
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
- CHECK MISFIRE COUNT OF PORT INJECTION
Pre-procedure1
- Put the engine in Inspection Mode (for measuring Exhaust Gas).
Powertrain > Hybrid Control > Utility
Tester Display Inspection Mode - Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
- Read each value for Misfire Count Cylinder #1 to Misfire Count Cylinder #6 and Injection Mode displayed on the GTS while performing the Active Test.
Powertrain > Engine > Active Test
Active Test Display Prohibit the Catalyst OT Misfire Prevent Fuel Cut Data List Display Injection Mode Misfire Count Cylinder #1 Misfire Count Cylinder #2 Misfire Count Cylinder #3 Misfire Count Cylinder #4 Misfire Count Cylinder #5 Misfire Count Cylinder #6 Result
Injection Mode Misfire Count Proceed to Port 1 or 2 cylinders have misfire counts A 3 cylinders or more have misfire counts There are no misfire counts B
Post-procedure1
- None.
Result:
A
See step 17
Result:
B
See step 20
- Put the engine in Inspection Mode (for measuring Exhaust Gas).
- READ FREEZE FRAME DATA (CATALYST OT MISFIRE FUEL CUT HISTORY)
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
Powertrain > Engine > DTC(P0300-27) > Freeze Frame Data
Tester Display Catalyst OT Misfire Fuel Cut History Result
Result Proceed to The value of Catalyst OT Misfire Fuel Cut History is ON A The value of Catalyst OT Misfire Fuel Cut History is OFF B
Result:
A
See step 7
Result:
B
See step 16
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
- READ FREEZE FRAME DATA (CATALYST OT MISFIRE FUEL CUT HISTORY)
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
Powertrain > Engine > DTC(P0300-85) > Freeze Frame Data
Tester Display Catalyst OT Misfire Fuel Cut History Result
Result Proceed to The value of Catalyst OT Misfire Fuel Cut History is ON A The value of Catalyst OT Misfire Fuel Cut History is OFF B
Result:
A
See step 7
Result:
B
See step 16
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
- READ FREEZE FRAME DATA (CATALYST OT MISFIRE FUEL CUT HISTORY)
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
Powertrain > Engine > DTC(P0301-00) > Freeze Frame Data
Tester Display Catalyst OT Misfire Fuel Cut History Result
Result Proceed to The value of Catalyst OT Misfire Fuel Cut History is ON A The value of Catalyst OT Misfire Fuel Cut History is OFF B
Result:
A
See step 7
Result:
B
See step 16
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
- READ FREEZE FRAME DATA (CATALYST OT MISFIRE FUEL CUT HISTORY)
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
Powertrain > Engine > DTC(P0302-00) > Freeze Frame Data
Tester Display Catalyst OT Misfire Fuel Cut History Result
Result Proceed to The value of Catalyst OT Misfire Fuel Cut History is ON A The value of Catalyst OT Misfire Fuel Cut History is OFF B
Result:
A
See step 7
Result:
B
See step 16
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
- READ FREEZE FRAME DATA (CATALYST OT MISFIRE FUEL CUT HISTORY)
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
Powertrain > Engine > DTC(P0303-00) > Freeze Frame Data
Tester Display Catalyst OT Misfire Fuel Cut History Result
Result Proceed to The value of Catalyst OT Misfire Fuel Cut History is ON A The value of Catalyst OT Misfire Fuel Cut History is OFF B
Result:
A
See step 7
Result:
B
See step 16
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
- READ FREEZE FRAME DATA (CATALYST OT MISFIRE FUEL CUT HISTORY)
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
Powertrain > Engine > DTC(P0304-00) > Freeze Frame Data
Tester Display Catalyst OT Misfire Fuel Cut History Result
Result Proceed to The value of Catalyst OT Misfire Fuel Cut History is ON A The value of Catalyst OT Misfire Fuel Cut History is OFF B
Result:
A
See step 7
Result:
B
See step 16
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
- READ FREEZE FRAME DATA (CATALYST OT MISFIRE FUEL CUT HISTORY)
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
Powertrain > Engine > DTC(P0305-00) > Freeze Frame Data
Tester Display Catalyst OT Misfire Fuel Cut History Result
Result Proceed to The value of Catalyst OT Misfire Fuel Cut History is ON A The value of Catalyst OT Misfire Fuel Cut History is OFF B
Result:
A
See step 7
Result:
B
See step 16
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
- READ FREEZE FRAME DATA (CATALYST OT MISFIRE FUEL CUT HISTORY)
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
Powertrain > Engine > DTC(P0306-00) > Freeze Frame Data
Tester Display Catalyst OT Misfire Fuel Cut History Result
Result Proceed to The value of Catalyst OT Misfire Fuel Cut History is ON A The value of Catalyst OT Misfire Fuel Cut History is OFF B
Result:
A
See step 7
Result:
B
See step 16
- Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.
- CHECK MISFIRE COUNT OF PORT INJECTION
Pre-procedure1
- Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).
Powertrain > Hybrid Control > Utility
Tester Display Inspection Mode - Start the engine and warm it up until the engine coolant temperature reaches 80°C (176°F) or higher.
Powertrain > Engine > Data List
Tester Display Coolant Temperature - Allow the engine to idle.
- Read each value for Misfire Count Cylinder #1 to Misfire Count Cylinder #6 and Injection Mode displayed on the GTS. If no misfire counts occur in any cylinders, perform procedure [A] and [B] and then check the misfire counts again.
Powertrain > Engine > Active Test
Active Test Display Control the Injection Mode Data List Display Injection Mode Misfire Count Cylinder #1 Misfire Count Cylinder #2 Misfire Count Cylinder #3 Misfire Count Cylinder #4 Misfire Count Cylinder #5 Misfire Count Cylinder #6 - Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using GTS (Misfire RPM and Misfire Load)" procedures above [A].
- Read the Injection Mode and Misfire Count Cylinder #1 to Misfire Count Cylinder #6 or DTCs displayed on the GTS [B].
Result
Injection Mode Misfire Count Proceed to Port 1 or 2 cylinders have misfire counts A 3 cylinders or more have misfire counts There are no misfire counts B
Post-procedure1
- None.
Result:
B
See step 20
Result:
A
See step 17
- Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).
- CHECK MISFIRE COUNT OF DIRECT INJECTION
Pre-procedure1
- Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).
Powertrain > Hybrid Control > Utility
Tester Display Inspection Mode - Start the engine and warm it up until the engine coolant temperature reaches 80°C (176°F) or higher.
Powertrain > Engine > Data List
Tester Display Coolant Temperature - Allow the engine to idle.
- Read each value for Misfire Count Cylinder #1 to Misfire Count Cylinder #6 and Injection Mode displayed on the GTS. If no misfire counts occur in any cylinders, perform procedure [A] and [B] and then check the misfire counts again.
Powertrain > Engine > Active Test
Active Test Display Control the Injection Mode Data List Display Injection Mode Misfire Count Cylinder #1 Misfire Count Cylinder #2 Misfire Count Cylinder #3 Misfire Count Cylinder #4 Misfire Count Cylinder #5 Misfire Count Cylinder #6 - Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using GTS (Misfire RPM and Misfire Load)" procedures above [A].
- Read the Injection Mode and Misfire Count Cylinder #1 to Misfire Count Cylinder #6 or DTCs displayed on the GTS [B].
Result
Misfire Count Proceed to Port (Result of step 7 or 16) Direct 1 or 2 cylinders have misfire counts 1 or 2 cylinders have misfire counts A 3 cylinders or more have misfire counts 3 cylinders or more have misfire counts B 1 or 2 cylinders have misfire counts There are no misfire counts C 3 cylinders or more have misfire counts There are no misfire counts D
Post-procedure1
- None.
Result:
A
See step 23
Result:
B
See step 26
Result:
C
REPLACE PORT FUEL INJECTOR ASSEMBLY (MISFIRING CYLINDER). Refer to REMOVAL [12/2023 - ]
Result:
D
See step 18
- Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).
- CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE)
Refer to PROCEDURE - Step 2
Result
Proceed to OK NG Result:
OK
REPLACE PORT FUEL INJECTOR ASSEMBLY (MISFIRING CYLINDER). Refer to REMOVAL [12/2023 - ]
Result:
NG
See step 19
- CHECK FUEL LINE
Result:
OK
GO TO FUEL PUMP CONTROL CIRCUIT. Refer to Fuel Pump Control Circuit [12/2023 - ]
Result:
NG
REPAIR OR REPLACE FUEL SYSTEM
- CHECK MISFIRE COUNT OF DIRECT INJECTION
Pre-procedure1
- Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).
Powertrain > Hybrid Control > Utility
Tester Display Inspection Mode - Start the engine and warm it up until the engine coolant temperature reaches 80°C (176°F) or higher.
Powertrain > Engine > Data List
Tester Display Coolant Temperature - Allow the engine to idle.
- Read each value for Misfire Count Cylinder #1 to Misfire Count Cylinder #6 and Injection Mode displayed on the GTS. If no misfire counts occur in any cylinders, perform procedure [A] and [B] and then check the misfire counts again.
Powertrain > Engine > Active Test
Active Test Display Control the Injection Mode Data List Display Injection Mode Misfire Count Cylinder #1 Misfire Count Cylinder #2 Misfire Count Cylinder #3 Misfire Count Cylinder #4 Misfire Count Cylinder #5 Misfire Count Cylinder #6 - Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using GTS (Misfire RPM and Misfire Load)" procedures above [A].
- Read the Injection Mode and Misfire Count Cylinder #1 to Misfire Count Cylinder #6 or DTCs displayed on the GTS [B].
Result
Misfire Count Proceed to Port (Result of step 4) Direct There are no misfire counts There are misfire counts A There are no misfire counts There are no misfire counts B
Post-procedure1
- None.
Result:
A
REPLACE DIRECT FUEL INJECTOR ASSEMBLY (MISFIRING CYLINDER). Refer to REMOVAL [12/2023 - ]
Result:
B
See step 21
- Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).
- CLEAR DTC
Pre-procedure1
- None.
Post-procedure1
- Turn the ignition switch off and wait for at least 30 seconds.
Result:
NEXT
See step 22
- CHECK MISFIRE COUNT
Pre-procedure1
- Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).
Powertrain > Hybrid Control > Utility
Tester Display Inspection Mode - Start the engine and warm it up.
- Press the EV/HV mode selection switch to select HV mode.
- Drive the vehicle with Misfire RPM and Misfire Load.
Powertrain > Engine > Data List
Tester Display Injection Mode Misfire Count Cylinder #1 Misfire Count Cylinder #2 Misfire Count Cylinder #3 Misfire Count Cylinder #4 Misfire Count Cylinder #5 Misfire Count Cylinder #6 Misfire RPM Misfire Load - Monitor all of the misfire count values or DTCs and Injection Mode displayed on the GTS.
Result
Misfire Count Injection Mode Proceed to There are no misfire counts - A 1 or 2 cylinders have misfire counts Port or Either B 3 cylinders or more have misfire counts Port or Either C There are misfire counts Direct D
Post-procedure1
- None.
Result:
A
CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS [12/2023 - ]
Result:
C
See step 26
Result:
D
REPLACE DIRECT FUEL INJECTOR ASSEMBLY. Refer to REMOVAL [12/2023 - ]
Result:
B
See step 23
- Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).
- INSPECT SPARK PLUG
- Inspect the spark plug of the misfiring cylinder.
Refer to PROCEDURE - Step 3
Result
Proceed to OK NG
Result:
NG
REPLACE SPARK PLUG. Refer to REMOVAL [12/2023 - ]
Result:
OK
See step 24
- Inspect the spark plug of the misfiring cylinder.
- CHECK FOR SPARK (SPARK TEST)
- Perform a spark test.
Refer to PROCEDURE - Step 1
HINT:
- If the result of the spark test is normal, proceed to the next step.
- Perform "Inspection After Repair" after replacing the spark plug or ignition coil assembly.
Refer to INITIALIZATION [12/2023 - ]
Result
Proceed to NEXT
Result:
NEXT
See step 25
- Perform a spark test.
- CHECK CYLINDER COMPRESSION PRESSURE
- Measure the cylinder compression pressure of the misfiring cylinder.
Refer to PROCEDURE - Step 10
HINT:
Perform "Inspection After Repair" after repairing or replacing the engine assembly.
Refer to INITIALIZATION [12/2023 - ]
Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [12/2023 - ]
Result:
NG
CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION
- Measure the cylinder compression pressure of the misfiring cylinder.
- CHECK INTAKE SYSTEM
- Check the intake system for vacuum leaks.
Refer to ON-VEHICLE INSPECTION [12/2023 - ]
OK
No leaks from intake system.
HINT:
Perform "Inspection After Repair" after repairing or replacing the intake system.
Refer to INITIALIZATION [12/2023 - ]
Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE INTAKE SYSTEM
Result:
OK
See step 27
- Check the intake system for vacuum leaks.
- READ VALUE USING GTS (COOLANT TEMPERATURE)
- Read the Data List twice, when the engine is both cold and warmed up.
Powertrain > Engine > Data List
Tester Display Coolant Temperature Standard
GTS Display Condition Specified Condition Coolant Temperature Cold engine Same as ambient air temperature Warm engine Between 75 and 100°C (167 and 212°F) Result
Proceed to OK NG
Result:
NG
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to REMOVAL [12/2023 - ]
Result:
OK
See step 28
- Read the Data List twice, when the engine is both cold and warmed up.
- READ VALUE USING GTS (INTAKE AIR TEMPERATURE)
- According to the display on the GTS, read the Data List.
Powertrain > Engine > Data List
Tester Display Intake Air Temperature OK
Same as actual intake air temperature.
Result
Proceed to OK NG
Result:
NG
REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to REMOVAL [12/2023 - ]
Result:
OK
See step 29
- According to the display on the GTS, read the Data List.
- READ VALUE USING GTS (MASS AIR FLOW SENSOR)
Pre-procedure1
- Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).
Powertrain > Hybrid Control > Utility
Tester Display Inspection Mode - Start the engine.
- Allow the engine to idle until Coolant Temp reaches 75°C (167°F) or higher.
- Read Mass Air Flow Sensor with the engine speed at 2500 rpm.
Powertrain > Engine > Data List
Tester Display Engine Speed Mass Air Flow Sensor Coolant Temperature HINT:
During charge control, the engine speed is set at idle. Therefore, the engine speed does not increase when depressing the accelerator pedal. In this case, read the Data List item after charge control has completed.
Standard
GTS Display Condition Specified Condition Mass Air Flow Sensor Engine warmed up
Shift position: P
A/C: Off
Engine Speed: 2500 rpmBetween 10.8 and 16.0 gm/sec Result
Result Proceed to The value of Mass Air Flow Sensor is between 10.8 and 16.0 gm/sec A None of the above conditions are met B
Post-procedure1
- None.
Result:
B
See step 33
Result:
A
See step 30
- Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).
- CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH)
Pre-procedure1
- Remove the cylinder head cover sub-assemblies RH and LH.
HINT:
Refer to PROCEDURE - Step 30
- Turn the crankshaft pulley and align its groove with the TDC timing mark of the timing chain cover.
- Check that the timing marks of the camshaft timing gear assemblies and camshaft timing exhaust gear assemblies are aligned with the timing marks of the bearing caps as shown in the illustration.
*a Timing Mark *b TDC Timing Mark HINT:
If the timing marks are not as shown, turn the crankshaft one revolution clockwise.
OK
Timing marks on camshaft timing gear assemblies and camshaft timing exhaust gear assemblies are aligned as shown in the illustration.
HINT:
If the result is not as specified, check for mechanical malfunctions that may have affected the valve timing, such as a jumped tooth or stretching of the timing chain.
Result
Proceed to OK NG
Post-procedure1
- None.
Result:
NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
Result:
OK
See step 31
- Remove the cylinder head cover sub-assemblies RH and LH.
- PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)
Pre-procedure1
- Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).
Powertrain > Hybrid Control > Utility
Tester Display Inspection Mode - Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
Powertrain > Engine > Data List
Tester Display Coolant Temperature HINT:
The A/C switch and all accessory switches should be off.
- Confirm that the value of Data List item Engine Independent is "Operate" then check the value of Intake Manifold Absolute Pressure while performing the Active Test.
Powertrain > Engine > Active Test
Active Test Display Control the EGR Step Position Data List Display Intake Manifold Absolute Pressure Engine Independent NOTE:- Make sure that the value of Data List item Engine Independent is "Operate" while performing the Active Test.
- Do not leave the EGR valve open for 10 seconds or more during the Active Test.
- Be sure to return the EGR valve to step 0 when the Active Test is completed.
- Do not open the EGR valve 30 steps or more during the Active Test.
OK
The value of Intake Manifold Absolute Pressure changes in response to the EGR step position when the value of Engine Independent is "Operate".
Standard
- EGR Step Position (Active Test) 0 Steps 0 to 30 Steps Intake Manifold Absolute Pressure
(Data List)(EGR valve is fully closed) Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed HINT:
- If the value of Data List item Engine Independent is "Not Opr" when the engine is idling, charge control is being performed. Perform the Active Test after charge control is complete ("Operate" is displayed).
- While performing the Active Test, if the increase in the value of Intake Manifold Absolute Pressure is small, the EGR valve assembly may be a malfunctioning.
- Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of Intake Manifold Absolute Pressure may occur while performing the Active Test. However, the amount that the value of Intake Manifold Absolute Pressure increases will be smaller than normal.
Result
Result Proceed to Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed A None of the above conditions are met B
Post-procedure1
- None.
Result:
A
See step 33
Result:
B
See step 32
- Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).
- INSPECT EGR VALVE ASSEMBLY
Pre-procedure1
- Remove the EGR valve assembly.
HINT:
Refer to REMOVAL [12/2023 - ]
Post-procedure1
- None.
Result:
OK
See step 33
Result:
NG
REPLACE EGR VALVE ASSEMBLY. Refer to REMOVAL [12/2023 - ]
- Remove the EGR valve assembly.
- CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION)
- Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter sub-assembly and ECM.
HINT:
Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [09/2023 - ]
Repair any problems.
Result
Proceed to NEXT
Result:
NEXT
See step 34
- Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter sub-assembly and ECM.
- CLEAR DTC
Pre-procedure1
- None.
Post-procedure1
- Turn the ignition switch off and wait for at least 30 seconds.
Result:
NEXT
See step 35
- CHECK WHETHER DTC OUTPUT RECURS (MISFIRE DTCS)
Pre-procedure1
- Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
- Perform the All Readiness.
Powertrain > Engine > Utility
Tester Display All Readiness - Input the DTC: P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00, P0304-00, P0305-00 or P0306-00.
- Check the DTC judgment result.
Result
Result Proceed to ABNORMAL
(DTC P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00, P0304-00, P0305-00 and/or P0306-00 is output)A NORMAL
(DTCs are not output)B
Post-procedure1
- None.
Result:
B
END
Result:
A
See step 36
- CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)
Pre-procedure1
- Disconnect the mass air flow meter sub-assembly connector.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result C13-3 (VCC) - C86-90 (VCVG) Always Below 1 Ω Ω C13-1 (FG) - C86-116 (VG) Always Below 1 Ω Ω C13-2 (E2G) - C86-115 (E2G) Always Below 1 Ω Ω C13-3 (VCC) or C86-90 (VCVG) - Body ground and other terminals Always 10 kΩ or higher kΩ C13-1 (FG) or C86-116 (VG) - Body ground and other terminals Always 10 kΩ or higher kΩ Result
Proceed to OK NG
Post-procedure1
- None.
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 37
- REPLACE MASS AIR FLOW METER SUB-ASSEMBLY
HINT:
- Refer to REMOVAL [12/2023 - ]
- If the results of the inspections performed in step 29 indicated no problem, proceed to the next step without replacing the mass air flow meter sub-assembly.
Result
Proceed to NEXT Result:
NEXT
See step 38
- CLEAR DTC
Pre-procedure1
- None.
Post-procedure1
- Turn the ignition switch off and wait for at least 30 seconds.
Result:
NEXT
See step 39
- CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
Pre-procedure1
- Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
- Perform the All Readiness.
Powertrain > Engine > Utility
Tester Display All Readiness - Input the DTC: P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00, P0304-00, P0305-00 or P0306-00.
- Check the DTC judgment result.
Result
Result Proceed to NORMAL
(DTCs are not output)A ABNORMAL
(DTC P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00, P0304-00, P0305-00 and/or P0306-00 is output)B
Post-procedure1
- None.
Result:
A
END
Result:
B
REPLACE ECM. Refer to REMOVAL [12/2023 - ]